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Vibration testing method for airplane braking system

A braking system and vibration test technology, which is applied in vibration testing, aircraft component testing, machine/structural component testing, etc., can solve problems such as hidden vibration failures that cannot be excited

Inactive Publication Date: 2017-11-03
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] In order to overcome the deficiency in the existing technology that it cannot stimulate the hidden danger of vibration failure within the service life, the present invention proposes a vibration test method for the aircraft brake system

Method used

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  • Vibration testing method for airplane braking system
  • Vibration testing method for airplane braking system
  • Vibration testing method for airplane braking system

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Experimental program
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Embodiment Construction

[0106] In this embodiment, a vibration test is carried out on a brake system of a civil aircraft. The service life of the brake system is required to be 5000 landings, and the duration of each landing is 2 hours. Carry out the vibration test of the brake system according to the life requirements.

[0107] This embodiment uses the test equipment shown in Table 1.

[0108] Table 1 Summary of Vibration Test Equipment for Civil Aircraft Braking System

[0109]

[0110] The matching products of the civil aircraft braking system described in this embodiment are shown in Table 2.

[0111] Table 2 Supporting products of civil aircraft braking system

[0112] Preface

name

model

Function

1

Linear Displacement Sensor

DW-1

Provide displacement signal to control box

2

Anti-skid brake control box

FH-2

Provide 0~20mA control current to the servo valve

3

servo valve

SF-3

Output 0~10MPa pressure

4

...

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PUM

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Abstract

Provided is a vibration testing method for an airplane braking system. The vibration testing method for the airplane braking system is used for triggering the hidden danger of vibration failures within the service life of the braking system. The vibration testing method comprises the steps of determining the testing time according to the vibration time of the service life requirement, determining the vibration test level according to the highest vibration level within the service life period, eliminating the failures through the technology that the hidden danger of the vibration failures is triggered with a high level and displayed with a low level, mounting all products of the braking system onto an electric vibration platform in a connection mode of the system, and triggering the hidden danger of the vibration failures in the running state of the braking system. By means of the vibration testing method for the airplane braking system, the test cycle is shortened and the test cost is reduced.

Description

technical field [0001] The invention relates to the field of environmental testing of civil aircraft brake systems, in particular to a vibration test method for civil aircraft brake systems. Background technique [0002] Environmental tests are required for the development of existing civil aircraft brake system products, but the environmental tests are carried out on the products in the brake system one by one, not the entire brake system. [0003] Status abroad: [0004] The standards adopted in the environmental testing of foreign civil aircraft products include: [0005] American Standard DO-160 "Environmental Conditions and Test Procedures for Airborne Equipment", including vibration, high temperature, low temperature, temperature altitude, impact, sand and dust, and rain tests. After all the test items selected in the development contract are passed, it means the environmental test Passed; each product in the brake system is subject to the above environmental test it...

Claims

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Application Information

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IPC IPC(8): B64F5/60G01M7/02
CPCB64F5/60G01M7/02
Inventor 乔建军乔子骅
Owner XIAN AVIATION BRAKE TECH
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